Question

a body with mass 5 kg is acted upon by a force f = ( –3ˆi + 4ˆj)n. if its initial velocity at t = 0 is v = (6ˆi -12ˆj)ms–1 the time at which it will just have a velocity along the y-axis is (a) never (b) 10 s (c) 2 s (d) 15 s

Answer 1

Use this relation
F=MA
F=M(V/T)
Find t